Integrated-electrochemical approaches powered by photovoltaic energy for detecting and treating paracetamol in water

Henrique, João Miller de Melo; Monteiro, Mayra Kerolly Sales; Cardozo, Jussara C.; Martínez‐Huitle, Carlos A.; Silva, Djalma Ribeiro da; Santos, Elisama Vieira dos

doi:10.1016/j.jelechem.2020.114734

Cited by 23 publications

(15 citation statements)

References 43 publications

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“…Finally, even if the LOD reported in this work (1.05 µM) is slightly above the detection limit established by other materials (see Table 2 ), there is room for improvements; for example, the size of the electrochemical sensor which could be reduced, the use of other carbon-based modifiers [ 21 , 22 ] which could enhance its selectivity and sensitivity, and consequently, improving the LOD. Finally, integrated environmentally-friendly electrochemical technologies [ 15 ] could be proposed for removing and detecting pollutants by using sensors and advanced oxidation/reduction processes [ 15 , 47 , 48 ] because it is possible to design small portable devices for monitoring pollutants before and after their elimination from water which benefit the use of specific strategies in real time. In fact, regarding the treatment of the river water sample in which was detected a HCQ contamination, reported in this work, it could be treated by electrochemical oxidation technology [ 15 , 48 , 49 ] and monitored by using the cork–graphite-based sensor proposed here.…”

Section: Discussionmentioning

confidence: 99%

“…Finally, integrated environmentally-friendly electrochemical technologies [ 15 ] could be proposed for removing and detecting pollutants by using sensors and advanced oxidation/reduction processes [ 15 , 47 , 48 ] because it is possible to design small portable devices for monitoring pollutants before and after their elimination from water which benefit the use of specific strategies in real time. In fact, regarding the treatment of the river water sample in which was detected a HCQ contamination, reported in this work, it could be treated by electrochemical oxidation technology [ 15 , 48 , 49 ] and monitored by using the cork–graphite-based sensor proposed here.…”

Section: Discussionmentioning

confidence: 99%

“…Additionally, chromatographic techniques have been employed, which may have disadvantages such as the need for sample pretreatment, high consumption of chemicals, a long analysis time, and large amounts of waste. Therefore, electrochemical methods have recently received great attention because of their advantages over chromatographic methods, such as a shorter analysis times, lower equipment cost, lower consumption of chemicals, high sensitivity, and the simplicity of preparation [ 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, a low-cost green sensor, which was made from graphite/cork, was proposed for detecting caffeine [ 17 ], paracetamol [ 15 ], caffeine and paracetamol [ 23 ], and Pb ions [ 24 ] in different matrices. Cork is a natural material that is obtained from the outer bark of the oak tree, Quercus suber L. [ 25 , 26 ] and has a microporous honeycomb-like structure.…”

Section: Introductionmentioning

confidence: 99%

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Green Composite Sensor for Monitoring Hydroxychloroquine in Different Water Matrix

et al. 2021

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Hydroxychloroquine (HCQ), a derivative of 4-aminoquinolone, is prescribed as an antimalarial prevention drug and to treat diseases such as rheumatoid arthritis, and systemic lupus erythematosus. Recently, Coronavirus (COVID-19) treatment was authorized by national and international medical organizations by chloroquine and hydroxychloroquine in certain hospitalized patients. However, it is considered as an unproven hypothesis for treating COVID-19 which even itself must be investigated. Consequently, the high risk of natural water contamination due to the large production and utilization of HCQ is a key issue to overcome urgently. In fact, in Brazil, the COVID-19 kit (hydroxychloroquine and/or ivermectin) has been indicated as pre-treatment, and consequently, several people have used these drugs, for longer periods, converting them in emerging water pollutants when these are excreted and released to aquatic environments. For this reason, the development of tools for monitoring HCQ concentration in water and the treatment of polluted effluents is needed to minimize its hazardous effects. Then, in this study, an electrochemical measuring device for its environmental application on HCQ control was developed. A raw cork–graphite electrochemical sensor was prepared and a simple differential pulse voltammetric (DPV) method was used for the quantitative determination of HCQ. Results indicated that the electrochemical device exhibited a clear current response, allowing one to quantify the analyte in the 5–65 µM range. The effectiveness of the electrochemical sensor was tested in different water matrices (in synthetic and real) and lower HCQ concentrations were detected. When comparing electrochemical determinations and spectrophotometric measurements, no significant differences were observed (mean accuracy 3.0%), highlighting the potential use of this sensor in different environmental applications.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Green Composite Sensor for Monitoring Hydroxychloroquine in Different Water Matrix

et al. 2021

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“…Recently, raw cork materials have been proposed as novel modifiers for developing electrochemical sensors [ 19 , 23 , 24 ] because their physical and chemical properties favor interactions with target species to be detected or/and quantified. Cork is obtained from the outer bark of the Quercus suber L. oak [ 25 ] and its composition consists of 33–50% suberin, 13–29% lignin, 6–26% cellulose and hemicellulose polysaccharides and 11–24% of tannis and waxes [ 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Applicability of Cork as Novel Modifiers to Develop Electrochemical Sensor for Caffeine Determination

et al. 2020

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This study aims to investigate the applicability of a hybrid electrochemical sensor composed of cork and graphite (Gr) for detecting caffeine in aqueous solutions. Raw cork (RAC) and regranulated cork (RGC, obtained by thermal treatment of RAC with steam at 380 °C) were tested as modifiers. The results clearly showed that the cork-graphite sensors, GrRAC and GrRGC, exhibited a linear response over a wide range of caffeine concentration (5–1000 µM), with R2 of 0.99 and 0.98, respectively. The limits of detection (LOD), estimated at 2.9 and 6.1 µM for GrRAC and GrRGC, suggest greater sensitivity and reproducibility than the unmodified conventional graphite sensor. The low-cost cork-graphite sensors were successfully applied in the determination of caffeine in soft drinks and pharmaceutical formulations, presenting well-defined current signals when analyzing real samples. When comparing electrochemical determinations and high performance liquid chromatography measurements, no significant differences were observed (mean accuracy 3.0%), highlighting the potential use of these sensors to determine caffeine in different samples.

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Advances in electrochemical detection methods for measuring contaminants of emerging concerns

Hassan

Khan

Andreescu

2021

Electrochemical Science Adv

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The presence of contaminants of emerging concerns (CECs) such as pharmaceuticals and personal care products, endocrine disrupting compounds (EDCs), per/poly-fluorinated substances (PFAS), pesticides, and nanomaterials poses significant challenges to the environment and human health. This review discusses the current status of electrochemical sensing methods and their potential as low-cost analytical platforms for the detection and characterization of emerging contaminants. Recent developments in advanced materials and fabrication techniques such as electrophoretic deposition, layer-by-layer deposition, roll-toroll and 3D printing techniques, and the scalable manufacturing of low-cost portable electrochemical devices are discussed. Examples of detection mechanisms, electrode modification procedures, device configuration, and their performance along with recent developments in fundamental electrochemistry, particularly nanoimpact methods, are provided to demonstrate the capabilities of these methods for the environmental monitoring of CECs. Finally, a critical discussion of future research needs, detection challenges, and opportunities is provided to demonstrate how electrochemistry can be used to advance field monitoring of these chemicals. These methods can be used as complementary or alternative methods to the currently used laboratory-based analytical instrumentation to facilitate large-scale studies and manage risks associated with the presence of CECs in the environment and other matrices.

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Integrated-electrochemical approaches powered by photovoltaic energy for detecting and treating paracetamol in water

Cited by 23 publications

References 43 publications

Green Composite Sensor for Monitoring Hydroxychloroquine in Different Water Matrix

Green Composite Sensor for Monitoring Hydroxychloroquine in Different Water Matrix

Applicability of Cork as Novel Modifiers to Develop Electrochemical Sensor for Caffeine Determination

Advances in electrochemical detection methods for measuring contaminants of emerging concerns

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